Title :
UV-induced Coulomb crystallization of dust grains in high-pressure gas
Author :
Rosenberg, M. ; Mendis, D.A. ; Sheehan, D.P.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA
fDate :
12/1/1996 12:00:00 AM
Abstract :
A scheme for forming a Coulomb lattice of positively charged dust grains in a high-pressure (P>torr) gas is discussed theoretically. The grains are charged positively by photoemission in the presence of a flux of ultraviolet (UV) photons with energy larger than the work function of the grains, but lower than the ionization potential of the background gas. Methods for levitating and containing the dust using photophoretic forces (both UV and non-UV), gas drag, and electrostatic forces are considered
Keywords :
crystallisation; dust; electrostatics; photoemission; photophoresis; plasma impurities; work function; Coulomb lattice; UV-induced Coulomb crystallization; electrostatic forces; gas drag; high-pressure gas; photoemission; photophoretic forces; positively charged dust grains; ultraviolet photon flux; work function; Argon; Crystallization; Dusty plasma; Electrons; Helium; Ionization; Lattices; Photonic crystals; Plasma density; Thermal force;
Journal_Title :
Plasma Science, IEEE Transactions on
